ABSTRACT
This chapter provides the more significant analytical and numerical quasi-steady-state models available to the analyst. It discusses the limiting processes that can control quenching and identifies the controlling mechanisms from qualitative viewpoint. The chapter also discusses the conservation equations that control the response of the quenching object and its cooling two-phase fluid. Averaging operators that are required to model the two-phase media with solvable conservation equations also are discussed. The chapter investigates the transient conjugate problem that couples conservation equations of the solid and the fluid to study transient heating and cooling and introduces the quasi-steady-state approximation to the transient conjugate problem. It explores the quasi-steady-state analysis procedure and emphasizes the requirements placed on this approach by the averaging operation used within the conservation equations. The chapter also discusses the effect of the averaging process used in obtaining the correlations and of the different characteristics on the post-critical heat flux (CHF) region on quenching.
